Jonathan Maltz, MD

Jonathan was born in South Africa and earned his medical degree there. After internship in South Africa, Jonathan emigrated to the United States to do his residency and marry the love of his life, Ellen. He has spent the majority of his life in the Olney area. He was first in solo practice and then spent 21 years with Montgomery Internal Medicine Associates prior to establishing the current practice with Dennis Hannon in February, 2009. Jonathan is Board Certified in Family Practice and he is also certified by the Royal College of General Practitioners of the United Kingdom. Besides medicine, Jonathan has many interests including golf, gardening, movies and being a gym rat. Jonathan and Ellen live in Brookeville.


Dennis M. Hannon, MD

Dr. Hannon was born and raised on a family farm in central Nebraska. He attended college in Nebraska. He received his medical degree from the University of Nebraska College of Medicine and then completed his Family Practice Residency at the University of Massachusetts Medical School. Dr. Hannon has remained Board Certified in Family Medicine. After working at Providence Hospital and Georgetown University Medical Center, he began practicing in Olney in 1980 and has practiced in this area since. Dr. Hannon and his wife, Lin, live in Brookeville. He has five children. Dr. Hannon enjoys hiking, surf casting, fly fishing, and following the beloved Cornhuskers.


Ann Crim, CMA

Ann provides clinical services for our office. She brings to our practice twenty plus years of experience in private practice offices that specialized in endocrinology, dermatology and internal medicine. She lives in Gaithersburg with her husband, Dan, and has a son and daughter who are in college. When not working, Ann enjoys spending time with family and friends.


Mila Mercy, Practice Administrator

Mila has lived and worked in Africa, Sharjah and Dubai, and Bahrain, where she was a teacher, Radio News Broadcaster, and personnel officer with a Civil and Electrical contractor. Whilst in the United States, she has worked in Real Estate and Title Industries and Orthopaedic Surgeons. She was instrumental in the opening of the new practice, working behind the scenes, in preparation for the February, 2009 opening. She loves her work and is always happy to go "the extra mile".